denoting a morpheme, such as the prefix non-, that occurs only as part of another word and not as a separate word in itself Compare free (sense 21)

(in systemic grammar) denoting a clause that has a nonfinite predicator or that is introduced by a binder, and that occurs only together with a freestanding clause Compare freestanding

9.

(logic) (of a variable) occurring within the scope of a quantifier that indicates the degree of generality of the open sentence in which the variable occurs: in (x) (Fx → bxy), x is bound and y is free See free (sense 22)

10.

bound up with, closely or inextricably linked with: his irritability is bound up with his work

11.

I'll be bound, I am sure (something) is true

bound2

/baʊnd/

verb

1.

to move forwards or make (one's way) by leaps or jumps

2.

to bounce; spring away from an impact

noun

3.

a jump upwards or forwards

4.

by leaps and bounds, with unexpectedly rapid progess: her condition improved by leaps and bounds

5.

a sudden pronounced sense of excitement: his heart gave a sudden bound when he saw her

6.

a bounce, as of a ball

Word Origin

C16: from Old French bond a leap, from bondir to jump, resound, from Vulgar Latin bombitīre (unattested) to buzz, hum, from Latin bombus booming sound

bound3

/baʊnd/

verb

1.

(transitive) to place restrictions on; limit

2.

when intr, foll by on. to form a boundary of (an area of land or sea, political or administrative region, etc)

noun

3.

(maths)

a number which is greater than all the members of a set of numbers (an upper bound), or less than all its members (a lower bound) See also bounded (sense 1)

more generally, an element of an ordered set that has the same ordering relation to all the members of a given subset

bound

adj.

"fastened," mid-14c., in figurative sense of "compelled," from bounden, past participle of bind (v.). Meaning "under obligation" is from late 15c.; the literal sense "made fast by tying" is the latest recorded (1550s).

"ready to go," c.1200, boun, from Old Norse buinn past participle of bua "to prepare," also "to dwell, to live," from Proto-Germanic *bowan (cf. Old High German buan "to dwell," Old Danish both "dwelling, stall"), from PIE root *bheue- "to be, exist, dwell" (see be). Final -d is presumably through association with bound (adj.1).

n.

"limit," c.1200, from Anglo-Latin bunda, from Old French bonde "limit, boundary, boundary stone" (12c., Modern French borne), variant of bodne, from Medieval Latin bodina, perhaps from Gaulish. Now chiefly in out of bounds, which originally referred to limits imposed on students at schools.

v.

"to form the boundary of," also "to set the boundaries of," late 14c., from bound (n.). Related: Bounded; bounding.

out of bounds

Beyond established limits, breaking the rules, unreasonable. For example, Calling the teacher a liar—that's out of bounds. This expression alludes to the boundaries of the playing area in numerous sports and to the rules applying to them. Its figurative use dates from the 1940s.
[ Early 1800s
]